WORK , POWER , ENERGY

detailed ans shall be appreciated....
ANS--B

1 Answers

106

Asish Mahapatra ·2011-01-06 21:45:26

Let the mass of the block be m
Then tension in the upper string at equilibrium = m*6 (think why)

Let the tension in the lower spring be T (downward say).
Then mg + T = 6m
=> T = m(6-g)
=> |a| = T/m = |6-g| = 4 m/'s²

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